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Finding the Fourth Proportional to 20,488,978.60, 30,733,467.90 and 19,313,247.40

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Solution

The fourth proportional to 20,488,978.60, 30,733,467.90 and 19,313,247.40 is: 28,969,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488,978.60 : 30,733,467.90 = 19,313,247.40 : x
  2. Step 2: Convert to fraction form
    20,488,978.60/30,733,467.90 = 19,313,247.40/x
  3. Step 3: Cross multiply
    20,488,978.60x = 30,733,467.90 × 19,313,247.40
  4. Step 4: Simplify right side
    20,488,978.60x = 593,563,069,012,658.38
  5. Step 5: Solve for x
    x = 593,563,069,012,658.38/20,488,978.60
  6. Step 6: Final answer
    x = 28,969,871.10

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Why These Related Problems?

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